From: Options and Accessories catalog for 1957 Dodge, Booklet # DMA 3296
Ask your Dodge dealer to demonstrate this marvelous accessory (available with Electro Touch-Tuner radio only) which can contribute so much to your pleasure when driving. Six specially designed 16-2/3-RPM records included with installation play from 45 to 60 minutes on each side. Catalog of other fine records is supplied. Needle will not slip on rough roads. Entire unit fits compactly beneath radio. Rich Hi-Fi tone flows through car radio speaker. A proven marvel of electronic engineering for music lovers.